Patents Assigned to SKF GmbH
  • Patent number: 4848938
    Abstract: A ring-shaped machine part of relatively hard material with an essentially cylindrical seating surface which has at least one ring-shaped milled section on which a machine part of relatively soft material with a corresponding seating surface can be seated coaxially in a form-locking manner. The milled section is provided on at least one axial end of the hard machine part and extends, starting from the cylindrical seating surface, to the end surface.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: July 18, 1989
    Assignee: SKF GmbH
    Inventors: Roland Haas, Manfred Brandenstein, Gerhard Herrmann, Karl Thurn
  • Patent number: 4834560
    Abstract: A plural ring bearing is comprised of at least outer and inner radially superimposed rolling bearings and has an intermediate ring common to the inner and outer bearings. The outer bearing comprises an inclined roller bearing with two rows of cylindrical rollers inclined with respect to one another and to the axis of the plural ring bearing. The inner bearing may have two rows of cylindrical or tapered rollers, and may additionally include a crossed roller bearing.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: May 30, 1989
    Assignee: SKF GmbH
    Inventors: Werner Jacob, Paul-Gerhard Hoch
  • Patent number: 4819854
    Abstract: A seal for sealing the space between inner and outer ring members comprising a sealing ring and a retaining element engaging in a recess in the outer ring with axial pretension and means mounting the sealing ring and retaining member in a manner for preventing relative movement in the radial direction between the sealing ring and the retaining member.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: April 11, 1989
    Assignee: SKF GmbH
    Inventor: Peter Schmehr
  • Patent number: 4818124
    Abstract: The non-rotating bearing ring of a pivot mounted roller is mounted to be radially movable on an undulated spring and axially held between two machine parts. Friction is produced by relative radial movement between the end surface of the bearing ring and the radially extending surfaces of the machine parts, to result in damping by dissipation of energy. The rubbing surfaces can be coated with friction layer or a solid sliding washer can be employed instead of a coated surface.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: April 4, 1989
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Horst M. Ernst, Roland Haas, Gunter Neder, Josef Stork
  • Patent number: 4815580
    Abstract: A storage station for receiving workpieces from a loading conveyor belt and for sending workpieces to an unloading conveyor belt. The station has a plurality of spaced platforms mounted on a common rotatable shaft, and apparatus for adjusting the vertical position relative to the rotary platforms of the ends of the loading and unloading conveyor belts which are proximal to the station. A first guide is provided for each platform for directing workpieces riding on the outer radial region of the respective platform toward the inner radial region of that platform when the first guide is in a first position.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: March 28, 1989
    Assignee: SKF GmbH
    Inventors: Rainer Schanz, Paul Baumbusch, Harald Egner
  • Patent number: 4810107
    Abstract: A seal for a rolling bearing having an inner bearing ring, an outer bearing ring, and rolling elements rolling in races therebetween, wherein a cover is affixed to the outer bearing ring and carries a sealing lip engaging the side surface of a groove adjacent an end of the inner bearing ring. A shoulder at the end of the inner bearing ring defines a gap seal with the cover. The cover extends substantially normal to the axis of the bearing and the sealing lip is either slightly conically inclined, or defines an annular outwardly extending groove.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: March 7, 1989
    Assignee: SKF GmbH
    Inventors: Horst M. Ernst, Franco Colanzi
  • Patent number: 4805281
    Abstract: A hydraulically actuated device for moving machine parts or the like, especially a device for pressing or fitting bearings into place in the forks of universal joints, consisting of a linear-action work cylinder, a pressure generator with a constant pressure, a supply tank with pressure medium, a main valve which controls the flow of pressure medium to provide the required amount in the work chamber of the work cylinder, a main line connecting these parts of the device, and a measurement system, which controls the main valve as a function of a measurement value, especially the center offset of the joint fork with respect to a reference axis or the like, characterized in that, between the work chamber of the work cylinder and the supply tank, a return line is provided, which has a throttle device which sharply reduces the return flow of pressure medium by comparison to the flow of medium into the work chamber.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: February 21, 1989
    Assignee: SKF GmbH
    Inventors: Josef Stark, Willi Gossmann, Rupert Wurmback
  • Patent number: 4806026
    Abstract: A seal for bearing bushing with a sealing ring in a bore of the bearing bushing having a sealing surface which rests against a cylindrical surface of a machine part supported in the bearing bushing. An auxiliary seal is located between the open end of the bearing bushing and a shoulder of the machine part. The auxiliary seal has a ring-shaped collar extending in the axial direction, by which it is connected to the bearing bushing and at least one sealing lip bearing against the bearing bushing. The ring-shaped collar is pretensioned with radial pretension. The auxiliary seal has axially oriented projections located in a ring-shaped recess on the side facing the bearing bushing and each projection is situated over a portion of its length on a tongue of the ring-shaped collar.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: February 21, 1989
    Assignee: SKF GmbH
    Inventors: Bernhard Bauer, Herbert Dobhan
  • Patent number: 4804276
    Abstract: A cage for a ball bearing, especially for an inclined ball bearing, is comprised of two side rings connected together by webs, with one of the side rings being outside of the pitch circle and the other side ring being inside of the pitch circle. Circumferentially resilient axially extending projections are provided extending from one of the side rings toward the other, radially inwardly or outwardly of the pitch circle, and recesses are formed by the webs and projections in the regions of minimum spacing between the balls.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: February 14, 1989
    Assignee: SKF GmbH
    Inventors: Armin Olschewski, Rainer Schurger, Robert Stolz, Gunter Neder, Walter Treibel, Heinrich Kunkel
  • Patent number: 4798482
    Abstract: The double-row bearing assembly with axially split inner and outer barrel rings has at least one pair of corresponding barrel rings and is connected by means of a fastening member in a form-locking manner. At least one spacer member is provided between a pair of corresponding barrel rings which are prevented from moving axially outward by the form-locking connection provided by the rolling elements. The spacer is provided with projections pointing in both axial directions, which cooperate with the associated barrel rings to provide a positive form-locking connection in the radial direction.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: January 17, 1989
    Assignee: SKF GmbH
    Inventor: Stanislaw Kruk
  • Patent number: 4795280
    Abstract: A locking mechanism for connecting machine parts such as bearing rings on a support. The support includes at least one radially elastic element having a seating surface for the ring which is deflectable radially inwardly to permit assembly of the ring on the support surface and at least one locking element formed integrally with the support and acuatable between a release position wherein the snapping element can be flexed to facilitate assembly and removal of a ring on the seating surface and a locked position wherein the ring is supported in a form locking manner in the seating surface.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: January 3, 1989
    Assignee: SKF GmbH
    Inventors: Herbert Dobhan, Bruno Schemmel, Hilmar Leuner, Walter Hahn
  • Patent number: 4790203
    Abstract: In a worm gear comprised of a nut and a threaded spindle, the groove bottoms of the threads are provided with a central support projection, and a radially deeper region is provided adjacent the projection on both sides thereof. When radial forces act in the same direction at both ends of the worm gear, the projection serves as a radial support projection with sufficient axial play. By providing convexly curved thread flank surfaces, for example on the nut, the threads run under the same conditions also when the axes of the nut and spindle are inclinded to one another as a result of the application thereto of inclined forces. As a consequence, axial play is reduced. Clamping of the threads is avoided in this case, however, since the support projection hinders a wedging action between the threads of the worm gear.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: December 13, 1988
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Horst-Manfred Ernst
  • Patent number: 4782576
    Abstract: For adjustment of the relative positions of two machine parts, at least one of the machine parts is provided with projections outwardly formed by stamping, the projections having contact surfaces which lie against the other machine part. The adjustment is performed by setting the projections back under the influence of a pressing force according to requirements. By this operation a relatively large contact surface can be provided. The deformation process takes place exclusively in the transition region between the projection and the rest of the machine part. The restoring forces are relatively small and relatively constant over the entire restoring range.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: November 8, 1988
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Horst M. Ernst
  • Patent number: 4780003
    Abstract: A clearance-free bearing bushing for universal joints which has a plurality of conical rollers located between a bearing bushing and a journal pin or the like. The rollers are pressed against their raceways by a spring element with a predetermined tension. On the side of the conical rollers facing away from the spring element, there is a thrust ring or the like, made of resilient material, which is free to move axially and which rests against the end surface of the conical rollers.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: October 25, 1988
    Assignee: SKF GmbH
    Inventors: Bernhard Bauer, Burkhard von Bredow
  • Patent number: 4776707
    Abstract: In a linear rolling bearing element, especially for tripod joints, the cage is formed of a relatively thick sheet metal and limit projections for a linearly movable support are formed by stamping out of the material of the cage. The rollers are likewise held in the cage by projections formed out of the cage. This results in a stable cage which can take the high forces from the engagement of the support. The outer roller may be close to the limit projection, in order to assure a good support of the roller in the extreme position of the tripod joint.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: October 11, 1988
    Assignee: SKF GmbH
    Inventors: Armin Olschewski, Berthold Beyfuss, Hermann Hetterich, Klaus Muschiol, Ingo Laufer, Peter Horling
  • Patent number: 4768889
    Abstract: A seal assembly for sealing between a pair of bearing rings wherein one of the rings has an annular groove for the seal comprising elastic annular ring member having at least one circumferential projection and at least one sealing disk and a retainer member. The volume of the elastic ring, which has been increased by the retaining sections for the parts to be held in place being in the preinstalled state at least the same as that of annular groove in one of the bearing rings.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: September 6, 1988
    Assignee: SKF GmbH
    Inventors: Norbert Loser, Peter Schmehr, Leopold Tilgner
  • Patent number: 4764157
    Abstract: A tensioning mechanism for drive belts which consists of a support arm, a rotating tensioning roll mounted on the arm, and a pivot bearing on the support arm a certain distance away from the tensioning roll. The tensioning mechanism is attached together with a mounting plate by a fastener to a machine block. A spring urges the tensioning roll away from the mounting plate and toward the drive belt. In the area of the pivot bearing, the mounting plate has, in the axial direction of the bearing, a fork-shaped cross section with shank sections which support the pivot bearing on both sides, radially and axially, by way of the fastener.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: August 16, 1988
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Ludwig Edelmann, Wolfgang Friedrich, Roland Haas, Gerhard Herrmann, Rudiger Hans
  • Patent number: 4762207
    Abstract: An automatic adjustment arrangement for disk brakes has a flanged threaded nut and a threaded spindle threadedly coupled thereto arranged between the brake piston and the hand brake piston. The flange of the threaded nut is axially form-locked and radially displaceable relative to the brake piston. The threaded spindle is rotatably supported in a rolling bearing which is radially displaceable. The hand brake piston and threaded spindle are frictionally coupled. The extension of the adjustment member is produced by rotation of the threaded spindle. To avoid malfunctions, an automatic centering of the entire adjustment element relative to the brake piston as well as relative to the housing is provided. Manufacturing and assembly errors are thereby compensated for. The positions of the threaded spindle and threaded nut can be interchanged.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: August 9, 1988
    Assignee: SKF GmbH
    Inventors: Armin Olschewski, Manfred Brandenstein, Horst-Manfred Ernst, Robert Stolz, Gunter Neder
  • Patent number: 4762480
    Abstract: Rotary pump comprising a housing having a bore and a first adjacent lateral side wall having at least one inlet slit and a second adjacent lateral side wall having at least one outlet slit of at least equal size to said inlet slit for flow of medium axially therethrough, said slits in said lateral side walls defining the path of flow for said medium from said inlet axially directly into said bore and then from said bore axially directly to said outlet slit, a rotor mounted in the bore for rotation about an axis generally parallel to and eccentric to the bore axis, a plurality of vanes pivotally mounted on the periphery of the rotor having free ends in sliding sealing contact with said bore, each vane having lateral surfaces having an inner edge facing the rotor and an outer edge facing the bore which edges on rotation of the rotor pass over an inner boundary edge of the inlet and outlet slits facing the bore of the housing, said inlet slit and outlet slit, curving along an arc around the rotational axis of ro
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: August 9, 1988
    Assignee: SKF GmbH
    Inventors: Otmar Winkler, Heinz Peter, Egon Pfaller
  • Patent number: 4752280
    Abstract: A tensioning arrangement for a drive belt includes a support, a tension roller rotatably mounted on one end of the support, a swivel bearing arranged on the support at a distance from the tension roller, a swivel-damping element in the form of a linear-acting frictional damper having a master piston and a slave piston arranged in and separately frictionally engaging a cylinder, a spring arranged concentrically around the cylinder and coupled to the master piston, and a spring arranged inside the cylinder and coupled to the slave piston. The displacement of the master piston in one direction is opposed by the frictional forces separately acting on both pistons, whereas the displacement of the master piston in the other direction is opposed by the frictional forces acting on only the master piston.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: June 21, 1988
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Roland Haas, Ludwig Edelmann, Gerhard Herrman, Rudiger Hans